Analysis and experimental verification of moving-magnet linear actuator with cylindrical halbach array

This paper deals with analysis and experiments of moving-magnet linear actuators with cylindrical Halbach arrays. On the basis of analytical two-dimensional field solutions, this paper predicts magnetic fields, thrust, flux linkage, and back electromagnetic fluctuation. The results are validated extensively by comparison with finite element analysis. Test results such as thrust measurements are also given to confirm the analysis. Index Terms--Cylindrical Halbach array, moving-magnet linear actuator, thrust measurements.